Ultralong organic room-temperature phosphorescence of electrondonating and commercially available host and guest molecules through efficient Förster resonance energy transfer

作     者：Yeling Ning Junfang Yang Han Si Haozhong Wu Xiaoyan Zheng Anjun Qin Ben Zhong Tang Yeling Ning;Junfang Yang;Han Si;Haozhong Wu;Xiaoyan Zheng;Anjun Qin;Ben Zhong Tang

作者机构：State Key Laboratory of Luminescent Materials and DevicesGuangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesSCUT-HKUST Joint Research InstituteAIE InstituteCenter for Aggregation-Induced EmissionSouth China University of Technology(SCUT)Guangzhou 510640China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion MaterialsKey Laboratory of Cluster Science of Ministry of EducationBeijing Institute of TechnologyBeijing 100081China Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionInstitute for Advanced Studyand Department of Chemical and Biological EngineeringThe Hong Kong University of Science&Technology(HKUST)Clear Water BayKowloonHong KongChina 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2021年第64卷第5期

页      面：739-744页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：This work was supported by the National Natural Science Foundation of China(21788102 and 21525417) the Natural Science Foundation of Guangdong Province(2019B030301003 and 2016A030312002) the Innovation and Technology Commission of Hong Kong(ITC-CNERC14S01). 

主　　题：room-temperature phosphorescence host-guest system Förster resonance energy transfer commercial luminophore anti-counterfeiting 

摘      要：Ultralong organic room-temperature phosphorescence(RTP)materials have attracted tremendous attention recently due to their diverse applications.Several ultralong organic RTP materials mimicking the host-guest architecture of inorganic systems have been exploited successfully.However,complicated synthesis and high expenditure are still inevitable in these studies.Herein,we develop a series of novel host-guest organic phosphorescence systems,in which all luminophores are electron-rich,commercially available and halogen-atom-free.The maximum phosphorescence efficiency and the longest lifetime could reach 23.6%and 362 ms,respectively.Experimental results and theoretical calculation indicate that the host molecules not only play a vital role in providing a rigid environment to suppress non-radiative decay of the guest,but also show a synergistic effect to the guest through Förster resonance energy transfer(FRET).The commercial availability,facile preparation and unique properties also make these new host-guest materials an excellent candidate for the anti-counterfeiting application.This work will inspire researchers to develop new RTP systems with different wavelengths from commercially available luminophores.